Aydan Eroğlu1, Aliye Sari. 1. Department of General Surgery and Surgical Oncology, Numune State Hospital, Konya, Turkey. aydaneroglu@hotmail.com
Abstract
BACKGROUND: The published results on expression of c-kit in benign and malignant breast tissues vary. MATERIALS AND METHODS: The immunohistochemical expression of c-kit proto-oncogene product in 52 invasive breast cancer tissues and 16 benign breast tumor (fibroadenoma) tissues was studied using anti-c-kit proto-oncogene product antibody. Its expression was evaluated by immunoreactive score (IRS). RESULTS: In breast cancer tissues, the mean IRS of c-kit proto-oncogene product expression was significantly increased compared to those of fibroadenoma (3.4 +/- 2 and 2.19 +/- 1.8, respectively,p = 0.035). The mean IRS of c-kit expression was higher in the group comprising estrogen (ER) positive tumor than in the group of ER negative (4.1 +/- 2.1 and 2.7 +/- 1.8, respectively,p = 0.012) but no statistically significant relationship was seen between the expression of c-kit proto-oncogene product and other clinicopathological parameters of breast cancer, including histologic type, tumor size, lymph node metastasis, distant metastasis, stage, progesterone receptor, c-erbB-2 expression, menopausal status and age of the patient (p > 0.05). CONCLUSIONS: Our results show that a high level of c-kit expression occurs frequently in invasive breast cancer, and its expression is associated with ER but unrelated to other clinico-pathological variables.
BACKGROUND: The published results on expression of c-kit in benign and malignant breast tissues vary. MATERIALS AND METHODS: The immunohistochemical expression of c-kit proto-oncogene product in 52 invasive breast cancer tissues and 16 benign breast tumor (fibroadenoma) tissues was studied using anti-c-kit proto-oncogene product antibody. Its expression was evaluated by immunoreactive score (IRS). RESULTS: In breast cancer tissues, the mean IRS of c-kit proto-oncogene product expression was significantly increased compared to those of fibroadenoma (3.4 +/- 2 and 2.19 +/- 1.8, respectively,p = 0.035). The mean IRS of c-kit expression was higher in the group comprising estrogen (ER) positive tumor than in the group of ER negative (4.1 +/- 2.1 and 2.7 +/- 1.8, respectively,p = 0.012) but no statistically significant relationship was seen between the expression of c-kit proto-oncogene product and other clinicopathological parameters of breast cancer, including histologic type, tumor size, lymph node metastasis, distant metastasis, stage, progesterone receptor, c-erbB-2 expression, menopausal status and age of the patient (p > 0.05). CONCLUSIONS: Our results show that a high level of c-kit expression occurs frequently in invasive breast cancer, and its expression is associated with ER but unrelated to other clinico-pathological variables.
Authors: H Joensuu; P J Roberts; M Sarlomo-Rikala; L C Andersson; P Tervahartiala; D Tuveson; S Silberman; R Capdeville; S Dimitrijevic; B Druker; G D Demetri Journal: N Engl J Med Date: 2001-04-05 Impact factor: 91.245
Authors: Y Yarden; W J Kuang; T Yang-Feng; L Coussens; S Munemitsu; T J Dull; E Chen; J Schlessinger; U Francke; A Ullrich Journal: EMBO J Date: 1987-11 Impact factor: 11.598